Разложите на множители:
1. b^2-c^2-b+c
2.a+b-a^2+b^2
3.a^2-a-c^2+c
4.m-m^2-n+n^2
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Разложите на множители:
1. b^2-c^2-b+c
2.a+b-a^2+b^2
3.a^2-a-c^2+c
4.m-m^2-n+n^2
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Verified answer
1) (b^2-c^2)-(b-c)=(b-c)(b+c)-(b-c)=(b-c)(b+c-1)
2) (b^2-a^2)+(b+a)=(b-a)(b+a)+(b+a)=(b+a)(b-a+1)
3)(a^2-c^2)-(a-c)=(a-c)(a+c)-(a-c)=(a-c)(a+c-1)
4) (n^2-m^2)-(n-m)=(n-m)(n+m)-(n-m)=(n-m)(n+m-1)